CVE-2025-55590Public exploitNetwork attack vector

Unauthenticated command execution via crafted upload filename

Published Aug 18, 2025 · Updated Aug 18, 2025

OS command injection in TOTOLINK A3002R firmware 4.0.0-B20230531.1404 allows remote attackers to execute commands through a file upload. The bupload.htm handler passes the multipart filename field into a command string that reaches system() without neutralizing shell metacharacters. No authentication is required; successful exploitation runs commands with the web service's privileges and permits router data modification.

CVSS severity6.5
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

OS command injection in TOTOLINK A3002R firmware 4.0.0-B20230531.1404 allows remote attackers to execute commands through a file upload. The bupload.htm handler passes the multipart filename field into a command string that reaches system() without neutralizing shell metacharacters. No authentication is required; successful exploitation runs commands with the web service's privileges and permits router data modification.

The record

CVE
CVE-2025-55590
Published
Aug 18, 2025
Updated
Aug 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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